APA (7th ed.) Citation

Watts, D. G. (1972). Map projections are easy (1. publ.). Thomas.

Chicago Style (17th ed.) Citation

Watts, David G. Map Projections Are Easy. 1. publ. Haverfordwest, Pembs: Thomas, 1972.

MLA (9th ed.) Citation

Watts, David G. Map Projections Are Easy. 1. publ. Thomas, 1972.

Warning: These citations may not always be 100% accurate.